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OpenStudy (anonymous):
PLEASE HELP?!?!?! Find the x and y values at the minimum of 2x^2+xy+2y^2+3y+2 And find the x and y values at the maximum of -3x^2+2xy-4y^2+2y+7
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OpenStudy (tkhunny):
Have you considered a complete derivative?
OpenStudy (anonymous):
CAN YOU SHOW ME??
OpenStudy (tkhunny):
Yes. Can you show me? You'll need a partial derivative in x and y.
OpenStudy (anonymous):
i don't know how to do it..
OpenStudy (tkhunny):
I did on the other post of the same question.
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